View Code of Problem 13

#include<stdio.h>
int main(){
  int h,a,b,k,flag;
  int num=1;
  while(scanf("%d %d %d %d",&h,&a,&b,&k)!=EOF){
    flag=0;
    for(int i=1;i<=k;i++){
      h=h-a;
      if(h<1){
        flag=1;
        break;
      }
      h=h+b;
    }
    if(flag==0)
      printf("Case #%d：Unknow\n",num++);
    else
      printf("Case #%d：White win\n",num++);
  }
  return 0;
}